gpu: nvgpu: add ctxsw channel reset event

Generate a ctxsw channel reset when engine needs to be reset.
This event is generated by the driver, while other events are
generated by FECS.

JIRA ELVR-314

Change-Id: I7791cf3e538782464c37c442c871acb177484566
Signed-off-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-on: http://git-master/r/1129029
(cherry picked from commit 114038a1a5d9e8941bc53f3e95115b01dd1f8c6e)
Reviewed-on: http://git-master/r/1134379
(cherry picked from commit 15fa2a7b48a0937dfd449ca0c4ed5ad3a863d6bf)
Reviewed-on: http://git-master/r/1123916
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/uapi/linux/nvgpu.h b/include/uapi/linux/nvgpu.h
index 3137c660..76a6b1cc 100644
--- a/include/uapi/linux/nvgpu.h
+++ b/include/uapi/linux/nvgpu.h
@@ -1367,6 +1367,7 @@ struct nvgpu_as_map_buffer_batch_args {
 #define NVGPU_CTXSW_TAG_SAVE_END                0x03
 #define NVGPU_CTXSW_TAG_RESTORE_START           0x04
 #define NVGPU_CTXSW_TAG_CONTEXT_START           0x05
+#define NVGPU_CTXSW_TAG_RESET                   0xfe
 #define NVGPU_CTXSW_TAG_INVALID_TIMESTAMP       0xff
 #define NVGPU_CTXSW_TAG_LAST                    \
         NVGPU_CTXSW_TAG_INVALID_TIMESTAMP